<%--02-main.jsp--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>02-main</title>
</head>
<body>
    <jsp:include page="/header.jsp"></jsp:include>
    页面主体内容...动态包含了头部和尾部<br>
    <jsp:include page="/footer.jsp">
        <jsp:param name="user" value="ylaihui"/>
    </jsp:include>
</body>
</html>
